EAC certification scope under the EAEU technical regulations covers only the model designations registered in the conformity document, not every variant in a commercial product family. Products in the unified list under Eurasian Economic Commission Decision No. 620 cannot be imported or sold without a valid certificate or declaration. Scheme choice matters: schemes 1c, 2c, 5c, 7c and 8c apply to serial production, schemes 3c, 4c and 9c to batch production. Certificate validity runs up to five years.